Yanwu Gu

Gu Yanwu (Chinese: 顧炎武; July 15, 1613 – February 15, 1682), also known as Gu Tinglin (Chinese: 顧亭林), was a Chinese philologist, geographer, and a famous scholar in the early Qing dynasty. After the Manchu conquest of north China in 1644, Gu participated in anti-Manchu activities. He never served the Qing dynasty. Instead, he traveled throughout north China, engaging in local studies intended to strengthen China's intellectual and spiritual resources.